Spectral Irradiance Data Download
  • In Situ calibrated
  • MLO calibrated
  • Historical Lamp calibrated
    • Weighted Irradiance Data Download
  • Erythemal
  • PAR
    • Derived Products Download
  • UV Index
  • Synthetic Spectra
  • Instantaneous Optical Depths
  • UV Irradiance Estimator
    • Climatology Products
  • Daily Sums
  • Hourly Sums
  • Spatio-Temporal Distribution of UV-B
  • US Merged Irradiance Statistics
  • Sums US Contour Maps
    • Instrument Characteristics Download
  • Filter Function Corrections
  • Angular Cosine Corrections
  • Langley Voltage Offsets
  • Serial Number Deployment History
  • Site Location Deployment History
    • Ancillary Measurements Download
  • Internal Head Temperature
  • Air Temp, Humidity, Reflective Solar Irradiance
  • Barometer
  • Electronic Offset(Bias)
  • Cosine Corrected Voltages
  • UVA (uncalibrated)
    • Quality Control Information
  • Data Processing Procedures
  • Data Corrections
  • Quality Control Abbreviations
    • Data Requests
  • Data Directory Access
  • Usage Statistics
    • Internal Head Temperature
    The internal head temperature (C) is given for selectable UV and Visible MFRSR instruments.

    Graphs of the data are available for a time selection of two months or less. Also provided, is a feature to export the data to a file on your local computer in several different formats(excel, csv, xml).

    Valid date range for location Alaska, Fairbanks, AK01, AK02 is from to

    Location and Time User Inputs
    • Climatological Sites
    • Alaska,Fairbanks
    • Arizona,Flagstaff
    • California,Davis
    • California,Holtville
    • Colorado,Lamar
    • Colorado,Nunn,Pawnee
    • Colorado,Steamboat Springs
    • Florida,Homestead
    • Georgia,Griffin
    • Hawaii,Waimea,Mauna Loa
    • Illinois,Bondville
    • Indiana,West Lafayette
    • Maine,Presque Isle
    • Maryland,Beltsville
    • Maryland,Queenstown
    • Michigan,Pellston
    • Minnesota,Grand Rapids
    • Mississippi,Starkville
    • Montana,Poplar
    • Nebraska,Mead
    • New Mexico,Las Cruces
    • New York,Geneva
    • New Zealand,Alexandra
    • North Carolina,Raleigh
    • North Dakota,Fargo
    • Ohio,Oxford
    • Oklahoma,Billings
    • Ontario,Toronto
    • Saskatchewan,Regina
    • Texas,El Paso
    • Texas,Houston
    • Texas,Panther Junction,Castolon site end 12-2014
    • Texas,Panther Junction,K-Bar site opened 12-2014
    • Texas,Seguin
    • Utah,Logan
    • Utah,Salt Lake City
    • Vermont,Burlington
    • Washington,Pullman
    • Wisconsin,Dancy
    • Long Term Research Sites
    • Canary Islands,Guimar
    • Canary Islands,Guimar
    • Colorado,Fort Collins,ZH02
    • Colorado,Fort Collins,ZH12
    • Colorado,Longmont,Perm.Reference,CO97
    • Colorado,Longmont,Table Mountain,CO99
    • Colorado,Nunn,Pawnee
    • Hawaii,Waimea,Mauna Loa,HI00
    • Hawaii,Waimea,Mauna Loa,HI03
    • Hawaii,Waimea,Mauna Loa,HI04,ref
    • Hawaii,Waimea,Mauna Loa,HI05
    • Hawaii,Waimea,Mauna Loa,HI06
    • Hawaii,Waimea,Mauna Loa,HI07
    • Hawaii,Waimea,Mauna Loa,HI08
    • Hawaii,Waimea,Mauna Loa,HI09
    • Hawaii,Waimea,Mauna Loa,HI11
    • Hawaii,Waimea,Mauna Loa,HI12
    • Hawaii,Waimea,Forrest Mims,HI21
    • Hawaii,Waimea,Forrest Mims,HI22
    • Hawaii,Waimea,Forrest Mims,HI31
    • Hawaii,Waimea,vis cal,HI41
    • Hawaii,Waimea,vis cal,HI51
    • Hawaii,Waimea,vis cal,HI61
    • Hawaii,Waimea,vis cal,HI71
    • Hawaii,Waimea,vis cal,HI81
    • Louisiana,Baton Rouge,SU-Ag
    • Louisiana,Baton Rouge,SU-Ag
    • Maryland,Greenbelt,NASA,MD21
    • Maryland,Greenbelt,NASA,MD22
    • Maryland,Greenbelt,NASA,MD23
    • South Korea,Seoul,NASA,KOREA
    • Texas,Seguin,vis LED unit
    • Utah,Salt Lake City,UT21
    • Short Term Experimental Research Sites
    • Arizona,Tucson
    • Bolivia,Santa Cruz,NASA MD22 in Bolivia
    • California,Mt. Wilson,SCOS-97
    • California,Mt. Wilson,SCOS-97
    • California,Pasadena,NASA
    • California,Riverside,SCOS-97
    • China,Xianghe,NASA
    • Colorado,Fort Collins,CO22
    • Colorado,Fort Collins,CO23
    • Colorado,Fort Collins,CO24
    • Colorado,Fort Collins,UVB Office
    • Colorado,Fort Collins,UVB Office
    • Colorado,Fort Collins,UVB Office OF23
    • Colorado,Longmont,Table Mountain,CO94
    • Colorado,Longmont,Table Mountain,CO95
    • Colorado,Nunn,CO03
    • Colorado,Nunn,CO04
    • Colorado,Nunn,CO05
    • Colorado,Nunn,CO06
    • Colorado,Nunn,CO07
    • Colorado,Nunn,CO09
    • Colorado,Nunn,CO21
    • Colorado,Nunn,CO31
    • Colorado,Nunn,CO51
    • Colorado,Nunn,CO52
    • Colorado,Nunn,CO61
    • Colorado,Nunn,CO62
    • Colorado,Nunn,CO71
    • Colorado,Nunn,CO81
    • Florida,Gainesville,Portable,FL99
    • Greece,Thessaloniki,NASA
    • Indiana,West Lafayette,Portable,IN99
    • Maine,Howland,data by spcl request
    • Mexico,Mexico City,UTTEC T1,MX01
    • Mexico,Mexico City,2003,MX02
    • Mexico,Mexico City,UNAM CASA,MX03
    • Mexico,Mexico City,IMP T0,MX04
    • Mexico,Mexico City,UTTEC T1,MX05
    • Mississippi,Brooksville,vis_MFRSR only
    • Mississippi,Newton,vis_MFRSR only
    • Mississippi,Stoneville,vis_MFRSR only
    • New York,Geneva,Portable,NY99
    • Norway,Oesteraas,NO02
    • Norway,Oesteraas,NO03
    • Texas,Houston,LaPorte Airport
    • Texas,Houston,LaPorte Airport
    • UAE,Dhabi,NASA